package com.eshealthy.config;

import com.auth0.jwt.exceptions.AlgorithmMismatchException;
import com.auth0.jwt.exceptions.SignatureVerificationException;
import com.auth0.jwt.exceptions.TokenExpiredException;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.eshealthy.utils.JWTUtils;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

public class JWTInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
     String token=null;
    token=(String)request.getParameter("token");

        Map<String, Object> map=new HashMap<>();
        try{
            DecodedJWT verify= JWTUtils.verify(token);
            map.put("status",true);
            map.put("msg","请求成功");
          return true;
        }catch(SignatureVerificationException e){
            e.printStackTrace();
            map.put("msg","无效签名");
        }catch(TokenExpiredException e){
            e.printStackTrace();
            map.put("msg","token过期了");

        }catch(AlgorithmMismatchException e){
            e.printStackTrace();
            map.put("msg","token算法不一致");
        }catch(Exception e){
            e.printStackTrace();
            map.put("msg","无效签名");
        }
        map.put("status",false);
        String json=new ObjectMapper().writeValueAsString(map);
        response.setContentType("application/json;charset=UTF-8");
        response.getWriter().println(json);
        return false;
    }
}
